Finding the Fourth Proportional to 2,183.31, 3,271.02 and 1,142.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.31 : 3,271.02 = 1,142.28 : x
2. Step 2: Convert to fraction form
   2,183.31/3,271.02 = 1,142.28/x
3. Step 3: Cross multiply
   2,183.31x = 3,271.02 × 1,142.28
4. Step 4: Simplify right side
   2,183.31x = 3,736,420.73
5. Step 5: Solve for x
   x = 3,736,420.73/2,183.31
6. Step 6: Final answer
   x = 1,711.36